The Massachusetts Turnpike Authority Board today voted to postpone a vote on toll hikes citing a desire to exhaust efforts to track down cost savings first.

For Mass Pike drivers, a significant toll increase is inevitable by January 2008. Today’s vote was set to focus only on tolls on the Metropolitan Highway System, which encompasses toll booths inside Route 128 at Weston and Allston, and at the Sumner and Ted Williams Tunnels. The toll increase could be as little as 25 cents at Allston and Weston, where it is currently $1, and 50 cents at the tunnels, where drivers pay $3.